阅读说明：本技术 一种植物生长调节剂及应用和使用方法 (Plant growth regulator and application and use method thereof ) 是由 唐先干 徐昌旭 李祖章 刘增兵 孙刚 张文学 袁福生 于 2020-07-31 设计创作，主要内容包括：本发明属于植物生长调节技术领域,具体涉及一种植物生长调节剂及应用和使用方法。该植物生长调节剂包括纳米二氧化硅、氧化石墨烯和水杨酸,植物生长调节剂是应用在紫云英种植中的,在紫云英的苗期和返青期应用本发明提供的植物生长调节剂,可以提高紫云英的根瘤固氮能力和紫云英的产量。(The invention belongs to the technical field of plant growth regulation, and particularly relates to a plant growth regulator and an application and using method thereof. The plant growth regulator comprises nano silicon dioxide, graphene oxide and salicylic acid, is applied to planting of the milk vetch, and can be applied to the seedling stage and the green turning stage of the milk vetch to improve the nitrogen fixation capacity of the root nodule of the milk vetch and the yield of the milk vetch.)

1. A plant growth regulator is characterized by comprising, by weight, 5-15 parts of nano silicon dioxide, 10-30 parts of graphene oxide and 2-4 parts of salicylic acid.

2. The plant growth regulator according to claim 1, comprising 8-11 parts of nano silicon dioxide, 18-23 parts of graphene oxide and 3 parts of salicylic acid by weight.

3. The plant growth regulator according to claim 1 or 2, comprising 10 parts of nanosilica, 20 parts of graphene oxide and 3 parts of salicylic acid.

4. The plant growth regulator according to any one of claims 1-3, wherein the mass concentration of the plant growth regulator is 150-500 mg/L.

5. The plant growth regulator according to claim 4, wherein the mass concentration of the plant growth regulator is 150-200 mg/L.

6. Use of the plant growth regulator of any one of claims 1 to 5 for planting of violaxanthin.

7. Use of the plant growth regulator of any one of claims 1-5 for nitrogen fixation of Astragalus sinicus.

8. Use of a plant growth regulator according to any of claims 1 to 5, characterized in that it comprises the following steps:

(1) in the seedling stage of the plant, the plant growth regulator is sprayed on the leaf surfaces of the plant for 2 to 4 times, and the interval time between two adjacent spraying times is 2 to 4 days;

(2) in the plant green-turning period, the plant growth regulator is sprayed on the leaf surfaces of the plants for 2-4 times, and the interval time between two adjacent spraying times is 2-4 days.

9. The use method according to claim 8, wherein in the step (1), the single dosage of the sprayed plant growth regulator is 29-30.5L/mu;

in the step (2), the single dosage of the sprayed plant growth regulator is 29-30.5L/mu.

Technical Field

The invention belongs to the technical field of plant growth regulation, and particularly relates to a plant growth regulator and an application and using method thereof.

Background

Astragalus sinicus (scientific name: Astragalus sinicus L.) and safflower are plants of Astragalus of Leguminosae. The milk vetch can improve and renew soil organic matters, enrich soil phosphorus and potassium, increase biological coverage rate, has outstanding fertility improvement effect, improves soil physical and chemical properties, promotes crop growth, increases soil microorganism quantity and diversity, improves soil ecological environment, promotes soil organic carbon accumulation, reduces CO₂The astragalus sinicus green manure plays an irreplaceable role today when low-carbon agriculture and organic concentration are advocated.

The milk vetch as a green fertilizer does not need to be fertilized in a large quantity, but a small quantity of phosphorus-potassium fertilizer, especially a phosphate fertilizer, is applied in the early stage, so that nodulation can be promoted, phosphorus is added to increase nitrogen, and the purpose of culturing a large fertilizer with a small fertilizer is achieved. The source of the organic nitrogen of the milk vetch mainly comes from the nitrogen fixation of the root nodules, the nitrogen fixation amount accounts for 80 percent of the total nitrogen amount of plants under the condition of good nodulation, and the biological nitrogen fixation of the milk vetch can save huge energy and industrial investment every year. The application of the milk vetch can reduce the application amount of the inorganic nitrogen fertilizer and reduce the risk of environmental pollution. However, in order to further improve the growth, seed retention and nitrogen fixation capacity of the milk vetch, a method of spraying a growth regulator on the leaf surface of the milk vetch is mostly adopted, the commonly used growth regulator is a paclobutrazol regulator at present, but the improvement of the nitrogen fixation capacity of the milk vetch by the regulator needs to be further improved.

Disclosure of Invention

Therefore, the invention aims to overcome the defects that the nitrogen fixation capacity of the astragalus sinicus needs to be further improved and the like in the prior art, and provides a plant growth regulator, and an application and a use method thereof.

Therefore, the invention provides the following technical scheme.

The invention provides a plant growth regulator which comprises, by weight, 5-15 parts of nano silicon dioxide, 10-30 parts of graphene oxide and 2-4 parts of salicylic acid.

Further, the plant growth regulator comprises, by weight, 8-11 parts of nano silicon dioxide, 18-23 parts of graphene oxide and 3 parts of salicylic acid.

Further, the plant growth regulator comprises 10 parts of nano silicon dioxide, 20 parts of graphene oxide and 3 parts of salicylic acid in parts by weight.

The mass concentration of the plant growth regulator is 150-500 mg/L.

The mass concentration of the plant growth regulator is 150-200 mg/L.

The invention also provides an application of the plant growth regulator in planting of the violaxanthin.

In addition, the invention also provides application of the plant growth regulator in nitrogen fixation of astragalus sinicus.

Further, the invention also provides a using method of the plant growth regulator, which comprises the following steps:

(1) in the seedling stage of the plant, the plant growth regulator is sprayed on the leaf surfaces of the plant for 2 to 4 times, and the interval time between two adjacent spraying times is 2 to 4 days;

(2) in the plant green-turning period, the plant growth regulator is sprayed on the leaf surfaces of the plants for 2-4 times, and the interval time between two adjacent spraying times is 2-4 days.

In the step (1), the single dosage of the sprayed plant growth regulator is 29-30.5L/mu;

in the step (2), the single dosage of the sprayed plant growth regulator is 29-30.5L/mu.

The technical scheme of the invention has the following advantages:

1. the plant growth regulator provided by the invention comprises nano silicon dioxide, graphene oxide and salicylic acid, and the synergistic effect of the nano silicon dioxide, the graphene oxide and the salicylic acid can promote the formation of the root nodule of the milk vetch in the seedling stage of the leguminous plant, improve the photosynthesis and the nitrogen fixation capacity of the root nodule of the milk vetch of the leguminous plant, and simultaneously promote the absorption and utilization of the root nodule bacteria on the dihydroxy acid with four carbon atoms, so that the nitrogen fixation capacity of the root nodule of the milk vetch is further improved; the nano silicon dioxide has the characteristics of large specific surface area, high surface hydroxyl content and strong adsorption capacity, and can promote the nitrogen fixation capacity of the astragalus sinicus rhizobium; the graphene oxide is beneficial to uniformly dispersing the nano silicon dioxide in an aqueous solution, and can form a layer of uniform protective film on the surface of a plant leaf, and the protective film has the effects of antibiosis, water permeability, light transmittance and the like and is beneficial to enhancing the nitrogen fixation capacity of the nodule; the salicylic acid can obviously improve the photosynthetic property of the astragalus sinicus, improve the yield of the astragalus sinicus, and promote the rhizobia to absorb the four-carbon dihydroxy acid and the nitrogen fixation capacity of the astragalus sinicus rhizobia.

2. The plant growth regulator provided by the invention limits the mixture ratio of the components of the plant growth regulator, and can obviously improve the nitrogen fixation capacity of astragalus sinicus.

3. The plant growth regulator provided by the invention is applied to planting of milk vetch, and the nitrogen fixation capacity of the root nodules and the yield of the milk vetch can be improved by applying the plant growth regulator provided by the invention to the seedling stage and the green turning stage of the milk vetch.

4. The application method of the plant growth regulator provided by the invention is simple and feasible, has small operation difficulty and is easy to realize large-area application.

Example 1

The embodiment provides a plant growth regulator, which comprises 100mg of nano silicon dioxide, 200mg of graphene oxide and 30mg of salicylic acid, wherein the solvent is water, and the mass concentration of the plant growth regulator is 150 mg/L.

The application of the plant growth regulator in planting the astragalus sinicus, and the using method of the plant growth regulator comprises the following steps:

in the seedling stage of the milk vetch, spraying the plant growth regulator on the surfaces of the milk vetch leaves for 2 times, wherein the interval time of spraying the plant growth regulator for two times is 3 days, and the single dosage is 30L/mu;

and (3) in the period of turning green of the milk vetch, spraying the plant growth regulator on the milk vetch leaf surfaces for 2 times, wherein the interval time of spraying the plant growth regulator for two times is 3 days, and the single dosage is 30L/mu.